:root{--accent:#6297bc;--btn:#0073a0;--text:#222;--headcol:#222;--orange:#f5bb59;--bg:#fff;--muted:#6b7280;--line:#e5e7eb;--radius:10px;}
*,*::before,*::after{box-sizing:border-box;}
html,body{height:100%;}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans";color:var(--text);background:var(--bg);line-height:1.6;}
img,svg,video{display:block;max-width:100%;height:auto;}
.container{max-width:1200px;margin-inline:auto;padding-inline:16px;}
.content a,.content a:hover,.content a:focus,.content a:active,.content a:visited{color:#222;text-decoration:underline;}
h1{color:var(--accent);margin:0.6em 0 0.3em;line-height:1.25;margin-top:0px;}
h2,h3,h4{color:var(--headcol);margin:0.6em 0 0.3em;line-height:1.25;}
h1{font-size:clamp(1.8rem,1.2rem + 2.2vw,2.4rem);}
h2{font-size:clamp(1.4rem,1.0rem + 1.2vw,1.8rem);}
h3{font-size:clamp(1.2rem,0.9rem + 0.8vw,1.4rem);}
h4{font-size:1.05rem;}
p{margin:0.5em 0 1em;color:#333;}
.site-header{padding:16px 0;}
.logo{width:100%;}
.nav-wrap{margin-top:12px;}
#nav-toggle{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
.nav-btn{display:inline-flex;align-items:center;gap:10px;padding:12px 14px;width:100%;border:1px solid var(--line);border-radius:var(--radius);background:#f8fafc;font-weight:600;cursor:pointer;user-select:none;}
.nav-btn::before{content:"☰";font-size:1.1rem;line-height:1;}
.site-nav{display:none;margin-top:8px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;}
#nav-toggle:checked~.site-nav{display:block;}
.site-nav ul{list-style:none;margin:0;padding:8px;display:grid;gap:6px;}
.site-nav a{display:block;padding:10px 12px;text-decoration:none;color:var(--text);background:#fff;border:1px solid var(--line);border-radius:10px;}
.site-nav a:hover{background:#f2f6f9;}
.sub-toggle{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
.sub-btn{display:block;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;font-weight:600;cursor:pointer;}
.sub-btn::after{content:" ▾";}
.toplink{display:none;}
.submenu{display:none;list-style:none;margin:6px 0 0;padding:8px;border:1px solid var(--line);border-radius:10px;background:#f8fafc;gap:6px;}
.submenu a{border-radius:10px;}
.submenu a:hover{background:#f2f6f9;}
.imgbox{border:1px solid var(--line);border-radius:var(--radius);}

@media (max-width:899.98px) {
.site-nav .toplink{display:none!important;}.site-nav .sub-btn{display:block!important;}.site-nav .has-submenu>.submenu{display:none!important;}.site-nav .has-submenu>.sub-toggle:checked+.sub-btn+.submenu{display:grid!important;}
}

@media (min-width:900px) {
.nav-btn{display:none!important;}.site-nav{display:block!important;overflow:visible;margin-top:12px;}.site-nav ul{display:flex;gap:12px;padding:10px;}.site-nav .sub-btn{display:none!important;}.site-nav .toplink{display:block!important;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;font-weight:600;}.site-nav .has-submenu{position:relative;}.site-nav .has-submenu>.submenu{position:absolute;top:100%;left:0;min-width:220px;padding:8px;display:none;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(0,0,0,.06);z-index:20;}.site-nav .has-submenu>.submenu::before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px;}.site-nav .has-submenu>.sub-toggle:checked+.sub-btn+.submenu{display:none!important;}.site-nav .has-submenu:hover>.submenu,.site-nav .has-submenu:focus-within>.submenu{display:block;}
}

.grid{display:grid;gap:16px;align-items:stretch;}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}

@media (max-width:900px) {
.grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:600px) {
.grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}
}

.testen { border-left: 8px solid #00aa00; background-color:#fafafa;padding:15px;margin-bottom:15px;margin-top:15px;}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:14px;background:#fff;box-shadow:0 1px 0 rgba(0,0,0,0.03);height:100%;display:flex;flex-direction:column;overflow-wrap:anywhere;}
.card{ background:#fcf7ed;}
.card .card-actions{margin-top:auto;}
.card h2,.card h3{margin-top:0;color:var(--headcol);}
.accordion{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.accordion details{border-bottom:1px solid var(--line);background:#fff;}
.accordion details:last-child{border-bottom:0;}
.accordion summary{cursor:pointer;padding:14px 16px;list-style:none;user-select:none;font-weight:600;color:var(--text);background:var(--orange);}
.accordion summary::-webkit-details-marker{display:none;}
.accordion summary::after{content:"▸";float:right;transition:transform .2s ease;}
.accordion details[open] summary::after{transform:rotate(90deg);}
.accordion .panel{padding:0 16px 16px;color:#334155;}
.btn{display:inline-block;padding:10px 16px;background:var(--btn);color:#fff;text-decoration:none;border:0;border-radius:999px;font-weight:600;line-height:1;transition:filter .15s ease,transform .02s ease;margin-top:7px;}
.btn:hover{filter:brightness(1.05);}
.btn:active{transform:translateY(1px);}
.btn:focus-visible{outline:3px solid color-mix(in oklab,var(--btn) 40%, white);outline-offset:2px;}
.btn,.btn:link,.btn:visited,.content a.btn,.container a.btn,.site-footer a.btn{color:#fff!important;text-decoration:none!important;}
.section{padding:10px 0;}
.muted{color:var(--muted);}
.hr{height:1px;background:var(--line);border:0;margin:24px 0;}
.site-footer{border-top:1px solid var(--line);margin-top:32px;padding:18px 0 40px;color:var(--muted);}
.site-footer a:link,.site-footer a:visited{color:#222;text-decoration:underline;}
.seo-lexikon dt {font-weight: bold;font-size: 1.2em;margin-top: 20px; color: #1a4f8b;border-left: 4px solid #1a4f8b;padding-left: 10px;}
.seo-lexikon dd {margin: 8px 0 20px 15px;font-size: 1em;color: #444;}
.seo-lexikon dt:hover {color: #e67e22;cursor: pointer;transition: color 0.3s;}
.green {color: #008800;font-size:1.1em;}
.lamod {display: block;text-align: right;font-size: .9rem;font-style:italic;}

.refs { line-height:1.6;}
.refs h2 { font-size:1.8rem;margin:0 0 .5rem;}
.refs h3 { font-size:1.25rem;margin:1.6rem 0 .6rem;}
.refs-list { list-style:none;margin:0;padding:0;}
.ref-item { display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid #e9ecef;}
.ref-item:last-child { border-bottom:0;}
.ref-logo { width:100px;height:auto;object-fit:contain;object-position:left center;flex:0 0 auto;display:block;}
.ref-logo-spacer { width:100px;height:60px;flex:0 0 100px;display:inline-flex;align-items:center;justify-content:center;font-size:26px;line-height:1;}
.check-green-bold { color: #16a34a;font-weight: 900;}
.ref-item a { color: #0a0a0a;text-decoration: none;}
.ref-item a:hover { text-decoration: underline;}
@media (max-width: 520px) {.ref-item { gap: 10px;} .ref-logo, .ref-logo-spacer { width: 88px;flex-basis: 88px;}}